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J. H. BARR AND E. E.. BARNEY.

TYPEWRITING MACHINE. APPLICATION FILED AUG. I6, 1920.

Patented ,Oct. 24, 1922.

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INVENTURE Ill/l.

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TYPEWRITING MACHINE. APPLiCATlON FILED AUG.16, 1920.

Patented Oct. 24,1922.

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Patented 00a 24,1922;

.I. H. BARR AND E. E. BARNEY.

TYPEWRITING MACHINE.

APr ucmoN FILED AUG. 16, 1920.

I lN\/ ENTEIR5 1 jakmm umanw ATTURNEY WITNEEEEE J. H. BARR AND E. E.BARNEY.

'TYPEWRITING MACHINE.

APPLICATION FILED AUG.16, 1920.

Patented Oct. 24,1922.

5 SHEETS-SHEET 5.

WITNESSES awvwtou Patented Oct. 24, 1922.

airs STATES PATENT caries.

JOHN H. BARR, or NEW YORK, N. Y.,' A D EDWIN a BARNEY, or NEWARK, NEW

JERSEY, ASSIGNOR-S r0 REMINGTON TYPEWRITER COMPANY, or ILION, NEW YORK,A CORPORATION or NEW YDRK. I

TYrnWnrrrNs MACHINE.

Application filed August 16, 1920. Serial No. 403,780.

To all whom it may concern:

Be it known that we, JOHN H. BARR and EDWIN E. BARNEY, citizens of theUnited States, and residents, respectively, of the city, county andState of New York, and

Newark, in the county of Essex and State of New Jersey, have inventedcertain new and useful Improvements in Typewritingv Machines, of whichthe following is a speci fication. 7

Our present invention relates to case shifting devices for typewritingmachines, and its principal object is to provide new and improveddevices of the character specified. In the form shown in the drawingsour invention is. adapted to shift the type bar system but it is to beunderstood that the invention is applicable to devices for otherwiseeffecting the case shift.

To the above and other ends which will hereinafter appear, our presentinvention consists in the features of construction, combinations ofdevices, and arrangements of parts hereinafter described andparticularly pointed out in the claims.

In the accompanying drawings which illustrate the preferred form of ourinvention,

Figure 1 is a front to rear vertical sectional view of a typewritingmach ne embodying said invention, parts of said machine being omittedand parts broken away and the front or keyboard portion at the left ofthe figure being transposed above and. somewhat to the right of itsusual position.

Figure 2 is a vertical sectional view taken on planes indicated by thedotted line 00 m in Figure 1 and looking forward.

Figure 3 is a horizontal sectional View taken on a plane indicated bythe dotted line i/ y in Figure l and looking downward.

Figure 4c is adetail sectional view taken on a plane indicated by thedotted line a a in Figure 3 and looking in the direction of the arrow atsaid line. I i

Figure 5 is a fragmentary perspective view of a detail; I

Figure 6 is a fragmentary vertical sectional view corresponding toFigure 1 but showing the parts as they are related when the type barsystem is shifted. v

Figure 7 is an enlarged vertical sectional view taken on a planeindicated by the cured together by screws 3.

dotted line Z) in igure 6 and looking forward in the direction of thearrow at said line, said figure illustrating certain of the shift keylock devices.

Figure 8 is an enlarged perspective view of certain of the shift keylock devices.

Figure 9 is a vertical sectional View taken on a plane indicated by thedotted line 2 1n F igure 1 and looking rearward in the direction of thearrow at said line.

Figure 10 1s a fragmentary perspective View of the locking devices forthe shiftable type bar support or segment.

Figure 11 is a fragmentary vertical sectional View illustrating amodified construction of the shift key locking mechanism.

Figure 12 is a vertical sectional view corresponding toFigure .11 butillustrating the locking mechanism when in effective posit1on or whenthe type'bar support is shifted.

' F igure 13 is a transverse vertical sectional view taken on a planeindicated by the dotted line 0 0 in Figure 1 1 and looking forward inthe direction of the arrow at said line.

I Figure leis a vertical sectional view taken on a plane indicated bythe dotted line (Z (Z in Figure 18 and looking in the direction of thearrow at said line.

frames or plates 1 preferably formed with openings and connected at therear by a cross plate 2, the frame members being se- A U-shaped framemember 4; is connected to the front portions of the side plates 1 andencloses the keyboard. Above the main frame is arranged a platen 5,diagrammatically illustrated, said platen being mounted on a carriage,not shown, which is adapted for movement back and forth from side toside of the machine under the control of devices including suitableescapement mecha nism. v

C o-operative with the front face of the platen are type bars 6 pivotedon a common fulcrum wire 7 that is mounted on a segmental support 8,each type bar being provided with two types, a lower case type 6 and anupper case type 6'. The type bars near its top.

are arranged in radial slots 9 formed in said support and normally arehorizontally disposed, their free end portions resting on a pad 10mounted on a segmental rest 11. The end portions of this rest aresecured by screws 12 to the forward ends of arms 13 extendinghorizontally forward from the segment or support 8 near its ends. Thearms 13 and segment 8 are connected together by screws 14:. The rearportions of the type bars 6 are provided each with a slot 15 with whichco-operates a headed pin 16 fixed to the rear end of the longerhorizontal arm of a bell crank 17 pivoted on a fulcrum wire 17 common toall of the bell cranks, said fulcrum wire being mounted on the segment11. The rear portion of said segment is formed with guide slots 11- inwhich the bell cranks 17 are arranged. The shorter arm of each bellcrank has connected to it the forward end of a link 18, the rear end ofsaid link being pivotally connected to an arm of .a lever 19 fulcrumedon a rectangular frame member 20 that is horizontally arranged withinthe base of the machine and detachably secured thereto by screws 21. Thesub-frame or member 20 is provided with a rearwardly extending lip orledge potion 20 The full train of type bar actuating devices is notdisclosed herein nor is the type bar action or system claimed per sesince it forms no part of the present invention. The type bar segment 8is secured to a supporting frame or bracket member, designated as awhole by the reference numeral 22, by means of the screws 14-. Thebracket member is vertically arranged behind the type bar segment andthe screws 14: pass through the segment into ears 22 projecting inwardfrom the bracket The bracket as a whole is curved to conform to thecurve of the segment, its front being formed with a channel 23 housingthe rear end portions of the type bars. Centrally the bracket isprovided with a rearwardly and downwardly curving arm 241- and at itssides said bracket is formed with outwardly extending lugs 25 havingplain vertical outer faces 26. Pivota-lly con nected by shoulder screws27 to the outer faces of the lugs 25 are horizontally disposed andrearwardly extending arms or links 28, these arms bearing on theshouldered portions of the screws 27 which are screwed into the lugs 25.The arms 28 at their rear end portions are provided with collars 29which fit over the end portions of a rock shaft 30, thecollars beingpinned thereto by pins 31. The rock shaft 30 extends from side to sideof the machine at its upper rear portion, and at the righthand side,viewed from the rear as in Fig. 2. is formed with a depressed portion 80to accommodate mechanism, not

shown, including the spring drum shaft. At

its ends the rock shaft 30 is formedwith depressions indicated at 32which receive rounded end portions 33 of pivot pins 34 projectinghorizontally inward from the side plates 1, said pins being accommodatedin holes in the side plates and being adjustably secured to the sideplates by downwardly extending set screws 35. The construction in effectprovides a rock shaft 30 and crank arms 28 near the ends thereof to supportand guide the shiftable element comprising the bracket 22, the typebar segment 8 and the rest 11. This element is further guided by theheads of adjustable screws 36 which are secured in the side frames 1 andproject inward therefrom, being adjustably locked to said side frames bylocking nuts 37. The tops of the heads or inner faces of said screws 36are adapted to co-operate with the plain faces 26 of the bracket 22 andare so adjusted that while they do not generate friction that wouldinterfere with the shifting movements of said bracket, they so cooperatewith the'faces 26 as to prevent undue side shake or vibration of theshiftable member.

The guiding and controlling of the shift able member is further assistedby devices comprising a link or arm 38 which, as will be understood fromFigs. 1, 2, 3, 9 and 10, is centrally ararnged. at the base of themachine, said link extending horizontally fore and aft of the machineand its forward end being pivotally connected by a shoulder screw 39 tothe curved arm 24, the lower end of said arm being provided with arightwardly extending projection or boss 40 which receives said shoulderscrew. The rear end portion of the arm or link 88 is perforated to fitloosely over a rock shaft 41, said rock shaft being supported from lugs2 which project forward from the inner face of the frame plate 2. Theselugs are formed with perforations 42, said per forations having openmonths 42 at their forward sides, contracted so that the distance acrossthese mouth portions is slightly less than the diameter of theperforations. The perforations 42 accommodate bushings or bearingmembers provided with collarportions idwhich receive set screws by whichthe bushings may be held in fixed relationship with the rock shaft tlwhich passes through them and over which thev fit. The bushings take abearing engage ment in the perforations 42 and are of. greater diameterthan the months 12 so that when they are engaged in the bearing openings42 (as in Figs. 2 and 3) the rock shaft 41 cannot be displaced forwardthrough the months 42. However, by loosening the set screws the bushings43 may be releaser and slid along the shaft l -1 out of engagement withtheir bea'ings, permitting the rock shaft to be removed by being drawnsaid bearings, the rockshaftbeing'of lesser diameter than these mouths.The with-Q drawn position of the bushings is shown in Fig. -l and indotted lines in Fig.2. There are three lugs'EZQ, one near each side ofthe machine and one centrally arranged between them and threecorresponding bushings,'so that theconstruction provides a stablesupport for the rock shaft, while at the same time permitting itsconvenient withdrawal and replacement. As stated, the link 38 bearsloosely on'the rock shaft 4 1, said link being contiguous to the centralh1g2 and being disposed at the right of said lug. The link 38 isloos'elyconfined between the cen tral lug 2 and a crank arm or operating arm 46,this crank arm being provided with a hub 47 which fits over the rockshaft 41 and is pinned thereto by a pin 48. wThe crank arm extendsforward from the rock shaft andits free end is adapted to cooperate witha latch or looking member com prised in, a mechanism which is adaptedautomatically to maintain the shiftable type bar element, locked in itsnormal position. Said latch, indicated by the numeral 49, is

pivoted on a shoulder screw 50 which is supported on the link 38, thelatch being in the same vertical plane with the crank arm 46, so thatthe free end of said crank arm may bear on a bearing face 51 with whichthe'latch is provided above its pivot 50. Below said pivot the tailportion of the latch is perforated to receive the hooked end of a coiledspring 52, .theopposite end of said spring being anchored to the link orlatch support 38, the tendency of said spring being constantly to swingthe upper arm of said latch forward; Said upperarm terminates in a hookportionhaving a horizontally disposed plain or. engaging face 53. Thisface is adapted normally to overlie the rearwardly extending end portion.of a T-shaped latch plate 54 secured by screws to a thickened portionor boss 20 of the ledge 20" of the frame plate 20. Normally the latch 49overlies and engages with the plate 54;, as clearly shown in Figs. 1 and10, its forward movement being limited by contact with the end of saidplate. At this time the shiftable type bar support'is in its lower caseposition so that the inner or lower case types on the type bars mayco-operate with the printing face of the platen 5-. Ad justment ofthelatch plate 54 is afforded by,

a screw 56 which is threaded upward through the ledge 20 and engages theunder face of the plate 54 behind the securing screws By loosening thesescrews and advancing upward the screw 56, the engaging or rear endofthe-plate 54 may be raised or lifted. Likewise said plate may bedepressed by lowering the engaging end of" the screw 56 andcorrespondingly tightening the securing screws 55. The screw 56 passesthrough the ledge 20 in rear of the thickened portion 20* so that theupper end of the engaging portion of the screw 56 is clear of the ledge,as shown in Fig. 1.

- Assisting to maintain the type bar support in its case positions arestop devices comprising headed screws 57 and 58 which are supported onthe arm 24: and are adapted to co-operate with the ledge 2O which servesas a stationary frame stop or arresting device. The arm 24- is providedat its sides with flanges or thickened portions 24? which serve. tostrengthen the arm and also afford sufficient stock for threading in thestop screws .57 and 58. The lower portion of the arm 24 is so shaped asloosely to embrace the ledge 20, the screws 57 and 58 being arrangedrespectively below and above said ledge so that their heads may contacttherewith at the thickened portion 20?. The screw 57 is threaded downthrough the lower end of the arm 24 so that the screw head may contactwith the under face of said ledge when the type bar support is in itslower case position, this in the present instance being when the typebar support is in its raised or uppermost position. The stop screw 58 isthreaded upward into the arm 24;. so that the head of said screw maycontact with the upper face of the ledge to arrestthe type bar supportor segment when it is depressed to bring the upper case types 6 intoposition for use. This upper case position is illustrated in Fig. 6.Adjustability of'the segment stops or screws 57 and 58 is of courseessential and in order to tally disposed and their connecting or crossportions 60 are contiguous to the frame plate 2, the ends of their outerarms 60 overlying the stationary ledge 20 The inner arms 60 of saidspring members extend forward in parallelism and terminate at oppositesides of the arm 24, their ends underlying a cross pin 61 extendingthrough said arm. At the bends formed between the arms 60 and theparts6O of the springmembers they are sup-ported on a bracket or .plate 62which isarranged below the forwardly curved top. portion of the crossplate 2 and 1S loosely secured thereto by a headed screw 63 passingdownward through said.

i top portion. The bracket 62 has side ledges or lips 6d terminatingforwardly in some what higher extensions 65. The spring members overlieand rest on the side ledges or Walls 64, and theinner arms 60 extendforward inside of said walls and contiguous to the extensions 65 withthe inner faces of which the spring arms are adapted to contact. Theconstruction is such that while the spring members 60 are supported onthe bracket 62, and are held against sidewise displacement by the parts65 of said. bracket, nevertheless the free action of the spring arms isnot impeded by the bracket. hen the type bar element 'is shifteddownward the spring arms 6O are flexed, subjecting the cross portions 60to torsion, and when, the shifted element is released the flexed springarms operate to return it or restore it to its uppermost position withthe stop screw 57 in contact with the under face of the stationary stop20 During this back and forth shiftingmovement the latch at) will beautomatically actuated, as will hereinafter appear,

Key actuated devices are provided for op erating the case shiftmechanism, said devices comprising, as best appears from Figs. 1, 2, 3and 6, crank arms 66 secured to opposite end portions of the rock shaft41, each crank arm 66 having a hub or collar portion 6? which is securedby a pin 68 to the rock shaft 41 outside the end bearings 2*. Thesecrank arms may act in co-opcration with the end bearings 2 to preventendwise displacement of the rock shaft ll, The crank arms depend fromthe rock shaft and each is provided with a laterally projecting pin orrivet 69 having a rectangular head. Each pin 69 passes through a slotway70 formed in the rear end of a forwardly extending link 71. Inassembling, the head of the pin is horizontally disposed and passesthrough the slot readily, "and thereafter the pin is turned and set soas to bring; the head crosswise of the slot, the construction preventingdisconnection of the link 71 from its associate crank arm 66. The forward end of each link is pivotally connected at 72 with an angular lever7 ful crumed on a rod 74 mounted upon the detachable sub-frame 20, eachlever 73 being guided in a guide slot in said frame. The forward portionof each of said levers 73 passes through slots 75 and 7 6 formedrespectively in two parts 77 and T8 of a comb plate or slottedguidemember, the'mounting of which will be more particularly de scribedin connection with the modification illustrated in Figs 11-15. Eachshift key lever 73 terminates forwardly in an upturned stem which isprovided with a shift' key or button 79, the two shift keys beingarranged one at each of the key-board. The shift keys are operatedindependently of esa-112 each other, the pin and slot connection (39, i0affording lost motion so that the actuation of one of the shift keyswill not affect the other or the train of devices associated with saidother down to and including the associate link 71, said link remainingmotionless while the crank arm 66 associated with it is free to swingrearward under the actuation of the other shift key. If found desirableeach shift key and its train of devices including the key lever 73 andlink 71 may be provided with suitable restoring springs. The right-handshift key is adapted to shift the type bar system temporarily, as whenit is desired to print a capital at the beginning of a sentence, whilethe lefthand shift key is adapted to be operated when more or lesscontinuous upper case printing is to be done and to that end isassociated with shift key loc ring devices next to be described.

Said shift key locking devices comprise a locking lever 80, bestillustrated in Figs. 1, 3 and G. T he lever 80 is pivoted at 81 to theoutside of the left-hand shift lever 73,

the rear arm of said lever 80 terminating in a lip 82 and its forwardarm terminating in a key 83. The lip 82 overlies the upper edge of thelever 73 and acts as a stop, being normally maintained in contact withthe lever 73 by a coiled spring 84 which is connected at one end to thelever 73 and at the opposite end to the forward arm of the lever 80above its pivot. The lockin lever 80 is adapted when depressed by theTrey 83 to swing-on its fulcrum 81 against the pull of the spring 8%,this independent movement of the lever 80 being limited by a stop pin 85which is adapted to contact with the upper edge of the lever 73, asshownin Fig. 6. After such contact further pressure on the key 83 willactuate both the lever 80 and the lever 73. Below its pivot the lever 80is provided with a hook or latch portion 80 having a face 80" which isadapted for cooperation with a relatively stationary device, one form ofwhich is illustut'ed in Figs. 1 and (5 S. Said device comprises a plate86 secured by rivet-s 87 to the inner face of the left-hand sideframe 1. At its lower end the plate 86 is provided with an inwardlyturned stop lip 88 and near its upper end said plate carries an inwardlyextending shouldered rivet or pivot pin 89 on which is pivotallysupported a co-operating latch member designated as a whole by thenumeral 90. Said member is U-shaped in cross section, having parallelsides 90 and 90", and itis spaced away from the plate 86 by a washer 91surrounding the shank of the pin 89. The member 90 is prevented fromaccidental detachment from said pin 89 by a headed screw 92 threadedinto the outer end of the pin 89. The side 90 of the member 90 adjacentthe washer extending" nose' whichnormally is maintained in engagementwith the stop lip 88 by'a coiledspring' 93, one'end of which isconnected to a lug projecting rearward from the side 90 of'the member90, the other end of said spring being anchored to a lugSG on the piate'86. Secured to the lower end ofthe side 90 is a member 94 comprising asemi-circular engaging device proper 95, a body or head 96 beingprovided witha nick for a screw driver, and a shank or threaded portion97 which'is threaded through the side 90". A clamping nut 98 at theopposite wall of the side 90" clamps the member 94 in adjustedrelationship to the. member 90. It will be observed that the pivotedmember 90 is in effect spring mounted, the spring 93 normallymaintaining the latching device 95 in contact with the stop 88 andcontiguous to the lower end portion of the hook 80 as in Fig. 1.. Vithen'thekey. 83 is depressed it will swing the lever SOon its pivot 81 whichinitially will remain stationary, with the result that the member 90willbe swung on its pivot 89 against the spring 93.. This movement willcontinue until, a result of the actuation of the key 83, the lever 80and the lever. 73 will be swung downward far enough tobring the lockingfacef80 past the straight inclined face of the detent or I latch part95, which will then be swung or. snapped forward by the spring 93 untilthe two parts interlock as in Fig. .6. the result beingthat the shiftkey mechanism Wlll be locked down and the parts controlled therebycorrespondingly locked in abnormaloru pper case position. The I forwardswing of the member 90 willbelimited by the stop 88, and the parts arearrangedfso that a sub sequent depression of the left-hand key 79 willrelease the leverSO and allow its hook portio1f80" to be swung forwardby the swing the associate lever 73 onIits pivot,

forcing the link 1 rearward and causing it through action on the pin 69to swing the associate crank arm 66 rearward, rocking the shaft 41. Assaid shaft is rocked the crank arm 46will be'swung downward and.

its forward end acting on the, contact face will swing the latch 49,011"its pivotalcenter 50. Itwill, be observed from 1 that normally thecrank arm 46 contacts only Wltllill? rear end portion of 'thecon-' tactsurface 51 somewhat behind and above the pivotal'center of the latch 49,the faces of the two'parts being at an angle. Conse- 1 uently theinitial swinging movement of the latch under the action of crank armwill. be independent of the supporting link 38 arm 46 contacts fullywith the cont-act face 51 substantially through its length, the

spring 52 being stretched as a result of this turning movement ofthelatch. This initial.

swinging movement of the latch will carry its hooked upper end 53rearward and clear of the plate 54 with which it normally engages. Afterthe latch .49 has been swung on its center out of locking engagementwith the plate 54, andthe crank arm 46 is fully engaged with the contactsurface 51 of said latch, further downward movement of said crankarmwill be transmitted from the latch 49 to the. upper side of the pivot 50and thence to the link 38, with the result that said link will be swungdownward. Downward movement of the link will be transmitted to thecurved arm 24 and thence to the frame or bracket member 22 and type barsegmentS, which together with the type bars (Sand their rest 11, willmove down ward until arrested by contact of the stop 58 with thestationary stop surface 20 as shown in Fig. 6. The downward or caseshifting movement of the type bars will be participated in by the bellcranks l7 and the forward portions of the links 18. These links willswingabout their pivotal connections with the levers 19 as: centers,which levers 19 being mounted on the stationary their pivotalpoint ofconnection with the associate lever 19, the links inclining forward andupward from such line. As a re sult of the case shifting movement thelinks willbeswungdownward to a corresponding position-below said line.When the shift key is released the type bar system and its support willbe re-shifted back to normal position, beingarrested by engagement ofthe screw stop 57 withthe under surface of the thickened or stop portionof the ledge 20. When the type bar system and its support are arrestedby contact of the stops as described, the link 38 will also be arrested,but upward movement of the crank arm 46 will continue, thus releasingthe latch 49 which will be free to swing forward under the pull of itsspring 52 until it automati oally reengages'with the plate 54, as shownin Fig. l.- In this position it will. be understood that the shiftabletype bar mechanism and itsv support will be held positively againstmovement or vibration. The latch 49, by reason of the engagement of itshook I 53 with the plate 54, will normally lock the shiftable frame ormember against downward movement, while the stop screw '57 will preventits upward movement. In other words, the latch 49 and the stop device 57co-operate with opposite sides of the stawhich. will remain stationaryuntil the crank *tionary stop to the shift member: or 130,

frame positively against vibration, which might result in the blurringof the type imprint or in causing it to print out of alignment.

In Figs. 11-15 is illustrated a modified construction of shift keylocking mecha' inism, which instead of having one of the co-operativelocking elements mounted on the side frame of the machine, provides instead amounting on the detachable sub frame 20, the advantage being thatwhen the frame part or sub-frame is detached, and with it the shift keylevers and asso ciate devices that are mounted on it, the co-operativelocking element will likewise be detached. in other words, a unitconstruction is provided. Referring first to Figs. 11 and 12, it will beobserved that the comb plate 77 is secured by screws 99 to the forwardends of horizontally disposed rods 100, said rods at their rear endsbeing threaded into the detachable frame 20. The comb or cover plate 7 8which fits over the comb plate 77 is detachably secured in place byscrews 101. The screws 99 are accessible through holes 78 in the coverplate 78. Fixed to the rear face of the comb plate 77 near its lefthandend is an angular bracket member 102 shown detached in Fig. 15. Thismember comprises a slotted portion 103 and an angu' larly disposedrearwardly extending portion 104. The portion 103 is provided withelongated slots 105 affording passage for screws 106 that secure thebracket to the comb plate 77. interposed between the portion 103 and thescrews is a rectangular washer 107. The portion 104- of the bracket isprovided with a stop lip 108 and a perforation109 which accommodates ashoul dered and headed rivet or pivot pin 110. This pivot pin provides apivotal support for a. co-operating dete-nt or latching device 111terminating at its lower end in an inwardly turned lip 112, which isadapted to co-operate with the hooked end portion or latch 80 of theshift lock lever 80. A coiled spring 113 having one end connected to thedevice 111 and the other end anchored to the bracket 102, tendsconstantly to swing the device 111 forward about its pivot and maintainsthe front edge of the lip 112 normally engaged with the rear face of thehook portion 80 The construction is such that. when the locking key 83is depressed from normal position the portion 80 will act. against thedevice 111, swinging it rear wardly against its spring 113 until theface 80 has swung downward far enough to clear the latch, which willthen snap forward to the Fig. 12 position, interlocking the parts Theforward swing of the device 111 under the pull of its spring 113 islimited by the stop 108, the construction and arrangement being suchthat when it is desired to release the parts a depression of the key 79will.

allow the hook 80 to swing clear of the lip 112, said hook beingthereafter drawn forward to clear said lip by the spring 841-.

Aside from the case shifting mechanism. such illustrated parts as arenovel are not claimed herein as they constitute no part of the presentinvention.

Various changes besides those described may be made without departingfrom the invention.

I What we claim as new and desire to secure by Letters Patent, is

1. In a typewriting machine, the combina tion of a platen element, atype bar element, a stationary part, a shift key, and a train of devicesbetween said key and one of said elements for shifting the same, saiddevices including a lock co-operating with said stationarypart tonormally prevent shifting movementof the shiftable element, said keyfirst unlocking said look while the shiftable element remains motionlessand said lock thereafter transmitting case shifting DIOYG. ments fromsaid key to said shiftable elcment.

2. In a typewriting machine, the combination of a platen, a type barsegment, a lock normally locking said segment against a fixed part ofthe machine against shifting movement, a shift key, and connections fromsaid shift key to said segment and also to said lock, the operation ofsaid shift key being effective first to unlock said lock with out movingsaid segment and thereafter to actuate said lock itself to shift saidsegment.

3. In a typewriting machine, the combination of an element shiftable tochange case, devices for supporting and guiding said element including alink, a spring latch mounted on said link and normally preventing caseshifting movement, and key operated means effective first to releasesaid latch and thereafter through said latch to actuate said link tocause a shifting of said element.

st. In case shifting mechanism for typewriting machines, the combinationof a shiftable element, a shift key, and a train of case shiftingdevices controlled by said key and. including a motion-transmittinglatch. mounted independently of said key and which normally operates tolock the shiftable element against shifting movement, it being necessaryfirst to unlock said latch in order to position it for motion tans-inissio the shiftable element remaining motionless during suchunlocking.

5. In case shifting mechanism for type writing machines, the combinationof a shiftable element, means for shifting said element including ashift key lever, and means including devices in said first recited meansfor normally holding said element positively in fixed relationship withstation ary part-s ofthe machine, said holding means being mountedindependently of the shift key lever and being rendered ineffectiveindependently ofand prior to the beginning of the case shiftingmovement.

6. In case shifting mechanism'for typewriting machines, the combinationof a platen, a segment, a shift key lever, and means operated by saidlever for shifting said segment, said means including essential partswhich also positively prevent vibration of said segment during printingoperations, which parts are renderedineffective as vibration.preventives independently of and prior to the beginning of the caseshifting movement of said segment.

7. In a typewriting machine, the combinalion of a platen, a shiftabletype bar segment, a lock normally controlling said seg merit, a shiftkey, and. a single train of connections between said shift key and saidsegment and also with said lock, said shift key being i'nountedindependently of said lock and the operation of said shift key beingeffective first to unlock said lock prior to the beginning of shiftingmovement onsaid segment and afterwards to shift said segment.

8. In case shifting mechanism for typewriting machines, the combinationof a shiftable segment, two stops thereon, a horizontal ledge on theframe of the machine provided with top and bottom contact surfaces fornormal co-operation with the stops on the segment whereby the stops andthe ledge are maintained in clamped relationship thus holding thesegment against vibration, a shift key, andconnections to one of saidstops for moving it to release the segment. l

9. In case shifting mechanism for typewriting machines, the combinationof a shif able element, a frame stop and devices on said shiftableelement co-operating with said frame stop at opposite sides thereof toprevent mmement of said element. I

10, In case shifting mechanism for typewriting machines, the combinationof a shiftable element, a frame stop and devices on said shiftableelement co-operating with said frame stop at opposite sides thereof toprevent movement of said element, one of said devices being movable topermit said element to be shifted. i

1.1. In a typewriting niiachine, the combination of a platen element, atype bar ele ment, means for relatively shifting said ele ments, a lockfor normally preventing said relative shifting movement, a- ,key, and asingle train of connections operative first to release said lock andafterwards to effect said relative shift, I

12. In a typewriting machine, the combi nation of a platen,a shiftabletype bar segment, a lock normallycontrolling said segment, a shift key,and a single train of connections between said shift key and said sement and also with said lock, the operation of said shift key beingeffective first to unlock said lock and afterwards to shift saidsegment.

13. In case shifting mechanism for typewriting machines, the combinationof a shiftable element, stops, a spring maintaining said stops incontactive engagement, a spring latch normally! preventing disengagementof said stops, and a train of devices for shifting said shiftableelement, said latch being-a necessary element in said train.

14. In case shifting mechanism for typewriting machines, the combinationof a shiftable element, stops, a spring maintaining said stops incontactive engagement, a

spring latch normally preventing disen gagement of said stops, a keyeffective to release said latch and operate the case shift, and a trainof devices for shifting said shiftable element, said latch being, anecessary element in said train.

15. In a typewriting machine, the combination of an element shiftable tochange case, supporting and guiding devices for said element comprisinga link, a spring latch mounted on said link and normally preventing caseshifting movement, and a key operated means effective to release saidlatch and actuate said link to effect the case shift.

16. In a typewriting machine, the combination of an element shiftable tochange. case, supportingand guiding devices for' said element comprisinga link, a latch pivoted on said link and normally preventing caseshifting movement, a spring for said latch, a crank arm coaxial withsaid link, and key operated means to swing said crank arm to releasesaid latch and through said latch to actuate said link to effect thecase shifting movement. I

17. In a typewriting machine, the combi nation of an element shiftableto change case, atrain of key actuated case shifting devices, a latchpivotally mounted on one of the parts in said train, and a stationarypart with which said latch normally engages.

18. In a typewriting machine, the combination of an element shiftable tochange case, a train of key actuated case shifting devices, a latchpivotally mounted on one of the parts in said train, and a stationarypart with which said'latch normally engages, said train also comprisinga partfor disengaging said latch from said stationary part.

19. In a typewriting machine, the coinbination of an element shiftableto change case, a train of key! actuated case shifting devices, a latchpivotally mounted on one of the parts in said train, and a plateadjustably mounted on a stationary part with which plate said latchnormally engages.

20. In a typewriting machine, the combination of an element shiftable tochange ra se, a train of key actuated case shifting devices, a. latchpivotally mounted on one of the parts in said train, a T-shaped latchplate with which said latch normally engages, a support for said latchplate, screws threaded into said support for securing said latch platethereto, and a screw oppositely threaded into said support and abuttingagainst said latch plate for vary ing the location of said latch plate.

21. In a typewriting machine, the combination of an element shiftable tochange case, supporting and guiding devices for said element comprisinga link, a vertically arranged latch pivoted on said link and provided atits upper end with a hook, a stationary latch plate with which said hooknormally engages, a spring connected to the tail of said latch andconstantly tending to maintain said hook engaged with said plate, and akey actuated crank arm effective on said latch to overcome said springand disengage said hook from said latch, said crank arm being thereaftereffective through said latch on said link to swing the same to shiftsaid shiftable element.

2-2. In a typewriting machine, the combination of an element shiftableto change case, case shifting devices comprising a ho r izontallydisposed link or arm, an upright latch pivoted on said link and providedat its upper end with a hook and also provided above its pivot with acontact face, a stationary plate with which said hook engages, a springconnected to the tail of said latch for maintaining such engagement, anda crank arm operative on the contact face of said latch to turn it onits pivot and thereafter to exert pressure against said pivot to movesaid link.

:3. In a typewriting machine, the. combination of a shiftable element, asupporting device between said element and the frame of the machine, ashift key, connections to said element from said shift key, two parallelspring arms connected to said element and both adapted to be flexedwhen. said element is shifted in one direction, said spring armsrestoring said element to normal position after the shift, and adetachable plate common to both springs and provided. with devices forpreventing displacement of said springs.

In a typewriting machine, the com bination of a shiftable element, ashift key, connections to said element from said shift key, and twoU-shaped springs having a common support and parallel arms adapted to beflexed when said shiftable element is shifted, the cross portion of eachspring be ing subjected to torsion as a result of the shifting movement,

25'. In a typewriting machine, the combination of a shiftable element, ashift key, connections to said element from said shift key, two U-shapedsprings having parallel arms adapted to be flexed when said shiftableelements is shifted, the cross portion of each spring being subjected totorsion a result of the shifting movement, and a common support for saidsprings comprising a plate secured by a screw to the frame of themachine and provided with projections which assist to prevent displacement of said U-shaped springs,

26. In a typewriting machine, the combination of a shiftable type barsegment, a bracket on which said segment is mounted, said bracket beingprovided with a depending arm, U-shaped springs having arms arranged inparallelism at opposite sides of said depending arm and co-operatingwith projections on said depending arm, and means for shifting saidsegment and bracket, said parallel spring arms being subjected toflexur'e during the shift and the cross portions of said iJ-shapedsprings being subjected to torsion.

27. In a typewriting machine, the combination of a shiftable element, arock shaft, a pair of crank arms connected to said element and fixed toopposite end portions of said rock shaft,- a second rock shaft connectedto said segment, a shift key connected to said second rock shaft,stationary bearings for said'second rock shaft. and disp'laceablebushings between said second rock shaft and said bearings.

28. In atypewriting machine, the combination of a shiftable' element, arock shaft, a pair of crank arms connected to said element and fixed toopposite end portions of said rock shaft, a second rock shaft connectedto said segment, a shift key connected to said second rock shaft, openmouthed bearings for said rock shaft, bushings detachably fixed to saidsecond rock shaft and engaging in said open mouthed bearings, thebushings being of greater diameter than the width of the mouths of saidbearings and the second rock shaft being of lesser diameter than themouths of said bearings.

29. In a typewriting machine, the combination of an element shiftable tochange case, controlling devices for said element including a shaft,bearing lugs for said shaft in the base of the machine, each bearing lugbeing circularly perforated, the perforations being provided with mouthsless in width than the diameter of the perforations, and bushingsslidably mounted on said shaft, said bushings having a bearing fit insaid perforations.

36. In a typewriting machine, the combination of an element shiftable tochange case, controlling devices for said element including a shaft,bearing lugs in the base of the machine for said shaft, each bearing lugbeing circularly perforated, the perforations being provided.with-moutlis less in width than the diameter of the "perform ti'ons, andl3USl1l11, S surrounding said shaft and bearing in the perforations ;insaid ,lu 's' saldflbnshin s haviiw collar JQFlllQllS tj 1:: 7 0

whlc'h receive set screws whereby the bush are detachably fixed tosaidshatt;

"In "a typewritihp; machine, the combushings being of greater" diameterthan said 'rnonths so that normally they prevent withdrawal o'f'rsai'dshaft-from said lugs,

the shaft,lioweverybeing free'to be with drawn sidewiseftherethron'ghwhen the bushings are freed and slid along the shaft out (if the.perforations] 32. In a typewriting machine', combination or" ashiftabl'e elein'e'nt, arock shaft,

a. pair of crank'arms fixed to opposite end to said second pair ofcrank-arms;

portions of said rock shaft landfpivotally connected" to, said shiftableelement, a sec,- ond'rock shaftparallel to the first, a crankar'm'iiX'ed centrally to the second rock shaft, arm.

connections between said central crank and sardpsh ftable element, asecond'fpa r of crank arms fixed to opposite endport ons of said secondrock shaft,iand key.

'33. In ajtypewriting machine, the combi-' nation re shiftable;.segment,two rock shafts, a pair of cra'nkjarm's fixedtoopposite end portions ofone otfsaid rock shaftsand pivotally connected to said "shiftablesegment, a crank arm tiked centrally to the other of said rockshafts,connections between said central crank arm andsaid shiftable segment, asecond pairof crank arms fixed to opposite end portions of said last"named rock shaft, key connections tosaid second pair of crank arms, andstops on the frame of the machine co-operative with said shiftablesegment to preventlateral' vibration thereof.

34. In a typewriting machine, the combi nation of ashiftableelementcomprising an upright type bar segment, an upright 'bracketmcmberto which said segment is detachably secured, saidbracket beingprovided-with a central arm extending downward and rearward, and a typebar rest sup-v ported from said bracket member; stop devices mounted onsaid arm; stationary stop devices with which said first recited stopdevices co-operate; a shift key; and connections to said element.

35. In a typewriting machin the combielement, a

connect-ions a shift key.

mass a a shiftable' element, two parallel rock'shatts, two crankarmsfixedt'o opp'oslt'e end portions of one-'of-sald rockshafts and'pivota'llyi connected to said shift-able other 0 tween i central crankarm and saidshiftable e'le'ment,.a secondpair of crank arins fixed toopposite endpv tionsoffsaid last named rock shaft, key "connections tosaid second pair Sofcrank arms, and'restoring spring mechanism for saidshiftable element, sald shiftableelement comprising an upright segment,an I -.u 3 rig'ht..bracket member to .which said segment isudet-achablyrsecured, said fbracket'r being provided 1 with a central, downwardlyextending Jarm with which :said spr ng 'mecharnsrn Jed-operates,

andv'ai typebarfire'st ,supportedk from said bracket'member. 36. In atypewriting merit, a crank; armiihfixed centrally-- tol the other I ofsaidnrock ishaits; connections be? crank arm fixedcentrally: to the said rock shafts," connections be H I machineg'the c0mb-i-' nation oi ashi'ftable element,- two parallel rock? shafts, two crank arms fixed too-p'posite end portions of one. ofi'said rock shafts and pivotallyconnected "to said shiftableeletween said'central cranl r ar m andfsaidshiit' I able element, a second pair-of crank arms I fixed to opposite;end portions ofsaidizla'st named rock-shaft, and :key connectionsjgtosaid secor'id pair o t crank arms, -'each' of; said key? connectionshaving" a. lost "motion roonnection with its. associate crank arm. -v ls 87; 'Infa typewriting machine ,Lthet comb1- nationof a shittableelement, two parallel rock shafts',*tw'o crank arms fixedto op'posit'eend portions oi; one of said rock shaftsfand 'plvotally T3 connected tosaid: shiftablel element, a-fcrank arm 'fixedi centrally to the other ofI said rock eshafts," connections Ebetween said-acentral' cranlr farm)and said arms fixed to opposite 'end portions of said last named rockshaft, and key connections" to said secondpalr of crank arms, said keyconnections comprising links "having lost motion connect on with theirassociate crank arms nd levers each pivotally connected" with one ofsaid links and iprovidedewith 38. In a typewriting machine, the,comblnation of a shittable element, two shift key levers, connectionsbetween each of said 1 levers and said shiftable element, and keylocking devices for one of said shift levers effective to hold it inoperative position, said key locking devices comprising a locking leverpivoted on said associate shift lever;

and provided with a hook, and. a spring mounted detent devicecooperative with.

said hook.

39.'I11 a typewriting machine, the combinationof a shiftable element,two shift key levers, connections between each of said levers and saidshiftable element, and key locking devices associated with one or saidvshift levers and efiective tohold it in operative position, said-keylocking ClGVlCGSCOID- prising a locking lever-pivoted on the asso ciateshift lever, a stop on one end of said locking lever and a 'key on theopposite end -of said locking lever, aspring connecting said lockingleverj'witlrthe associate shift lever, a hook on said locking lever, anda spring pressed engaging-device for engaging said hook. i 40. In atypewriting machine, the combination of a .shiftable element, a shiftkey lever, connections between an arm of said lever and said shiftableelement, a comb plate detachably mounted on the frame of the machineand"provided with aguide slot for said shift lever,"a locking lever pivotedon the shift lever and providedwith a hook,

a stop -and a key, a spring connecting said locking lBVBIWVltllill'lGassociate shift lever,

anda spring pressed detent for said hook,

.said 'detent being mounted on said comb plate. a a I J a 41.111 atypewriting machine, the com- *bination ofan element shiftable tovchange case, Slllfl'f key levers, connections between said. levers andsaid element,.a sub-frame Idetachably mounted on the main frame of themachine on which said shift levers are pivoted, a guide comb withwhich'said levers co-operate, said guide comb being detachably securedto'said sub-framakey locking devices associated" with" one of said shiftlevers, said key locking'd'evices comprising a locking lever pivoted tothe associate shift lever and a detent device co-operative withsaid'locking lever, said detent device being mounted on said'oomb plate.

42. In a typewriting machine, the combination of an element shiftable tochange case, shiftkey levers, connections betwee'n said levers and saidelement, a sub-frame detachably mounted on the main frame of themachine,-said shift levers being vpivoted .on said'sub-frame, a. guidecomb with which said levers co-operate, arms secured tosaid sub-frameand projecting forward therefrom, screws for attaching said guide combto said ar1ns, a locking lever pivoted to one of said shift levers andprovided with a hook, a spring pressed detent with which said hookco-operates, and av bracket on which said detent is pivoted, saidbracket being detachably secured to said guide comb. v o

43. In a typewriting machine, the combination of an element shiftable tochange case, shift key levers, connections between said levers and saidelement, afsubdrame detachably mounted .on the main frame-,rsaid shiftlevers beingpivoted on said sub-frame,

a comb plate by which said'levers are guided, said comb plate beingdetachablysecured .to said sub-frame, key locking devices comprising alocking "lever pivoted to one of said shift levers, an angular bracket,screws for adjustablysecuring said bracket to said comb plate, adepending arm pivoted to said bracket, a spring anchored to said bracketand connected to said arm,f a stop .on said bracket against whichsaidarm is normally maintained by said spring, and an engaging deviceupon said arm adapted to co-operate with i said locking lever. i

Signed at the borough of Manhattan, city of New York, in-ythe county ofNew York

